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visits member for 5 years, 2 months
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May
16
comment Fixed dhcp host to automatically expire any lease
No. It's easy enough to script adding a fixed-address and releasing any active leases for that MAC, though.
May
16
answered Fixed dhcp host to automatically expire any lease
Jul
6
awarded  Notable Question
Jan
4
accepted Null MX records
Jan
4
comment Null MX records
The host at the A record isn't mine; so I was wondering if I could do it entirely via DNS. This does, however, make the most sense.
Jan
3
asked Null MX records
Dec
19
awarded  Benefactor
Dec
19
accepted Unequal Cost Load Balancing via MPLS TE
Dec
19
comment Unequal Cost Load Balancing via MPLS TE
So basically, to get the UCLB, all routes need to be announced to flow through a single device, and thus needs to handle all external announcements into the OSPF LSA fabric. These tunnels are simply one-way interfaces from a routing standpoint, and without explicit routing thable entries the routers aren't going to do anything 'magical'. Think I get it, thanks.
Dec
15
comment Unequal Cost Load Balancing via MPLS TE
Also, if I simply advertise Site A from Site B in the three locations, the two routers directly connected to Site B and the router in Site A that handles the two Site A -> Site B tunnels, I should be able to get around configuring a default gateway in site A, if I'm visualizing this correctly?
Dec
15
comment Unequal Cost Load Balancing via MPLS TE
In fact, that article is what I read prior to doing this. There is no real 'main' router at site B and if at all possible I'd like to have redundancy as well so that in case the router that is load balancing the traffic goes down that Site A is still routable from the network. Would this be best served by just announcing the tunnels with a small cost, letting it serve as the shortest path from site B, then if the router goes down letting the other OSPF routes take over? i.e., should I be viewing the tunnels as a shortcut of sorts advertising least cost between sites?
Dec
15
comment Unequal Cost Load Balancing via MPLS TE
Yeah, it's on the diagram to show a planned link. The main purpose of this is to route types of traffic between A and site B and A and the internet over one of the two available connections. Yes, it is intended to be bidirectional and I do realize I need to set up each half on the appropriate locations.
Dec
14
awarded  Promoter
Dec
12
revised Unequal Cost Load Balancing via MPLS TE
edited tags
Dec
12
accepted Nagios escalation debugging
Dec
12
asked Unequal Cost Load Balancing via MPLS TE
Sep
22
accepted Linux - Is there a way to determine what mac addresses an interface has seen traffic from?
Sep
22
comment Linux - Is there a way to determine what mac addresses an interface has seen traffic from?
Yeah, like I thought there's nothing built into a base linux kernel that's going to do this sort of thing; the best bet for implementing this is packet capture & logging Ethernet frame MACs. Though it's unsuitable for my purposed; it's the answer.
Sep
21
comment Linux - Is there a way to determine what mac addresses an interface has seen traffic from?
Like I stated in the question arp will not work; it's a glue between IP and Ethernet and thus requires that the IP address is recognized as valid in order to set up the glue. If an interface sees broadcast traffic sourced outside of configured networks on the interface it's not going to bother trying to set up the arp table entries for it.
Sep
21
comment Linux - Is there a way to determine what mac addresses an interface has seen traffic from?
Yeah, unfortunately packet capturing for a period of time and filtering the results isn't an option for this case. I'm looking for something more at the driver level that logs seen traffic and not something that needs to be done interactively.